. The essentials of botany. Botany. PTERIDOPHTTA. 221 (oosphere). Fertilization takes place in water (after rains or heavy dews), the antherozoids swimming to and down. Fig. 129.—Antherids of a fern (Polypodium vulgare), X 240. A, at ma- turity ; B, empty; C, antherozoids of same, X 540. (From Strasburger.). Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Bessey, Charles E. (Charles Edwin), 1845-1915. New York : Holt

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Keywords: ., bookcentury1800, bookdecade1890, booksubjectbotany, bookyear1896